Linux C 程序 (FIVE)

 1 #include<stdio.h>
 2 int main(){
 3     int a , b , c ,d ;
 4     a = 10;
 5     b = a++;//先赋值给b，a再自增
 6     c = ++a;//先加后赋值给c
 7     d = 10*a++;//相当于 d=(10*a),a=a+1
 8     printf("b,c,d :%d,%d,%d",b,c,d);
 9 }
10 output:
11 b ,c ,d 10,12,120

 1 方法-：中间变量
 2     int a=1,b=2,temp;
 3     temp = a;
 4     a = b ;
 5     b = temp;
 6 方法二：
 7   int a=1,b=2;
 8   a = a + b;
 9   b = a - b;
10   a = a - b;